Thunder Tiger Bandit 3.5

[Jaco Engelbrecht]

Hey thanks everybody, your help is appreciated. Im in South Africa, but yes my local hobby shop is more in the offroad nitro class, not much okes here with boats, but in our big city its another story. Phoned a guy from hobby centre and his prices r good and he got everything I will ever need and like I heard, he is propably one of the best 26cc gas pilots in this part of the world. So the advice comes from you okes and the parts from him.

 

[Jaco Engelbrecht]

Hey guys, were on the water today and the bandit ran very well, think the settings is finally in a good range. Only problem is that my flex shaft broke, think its my own stupidity - ran the boat 5 days ago and did not lube the shaft again. One of my friends told me to remove it after each day of playing, drown it in ATF and lube it with marine grease before the next run - did not do that.

Question: what is ATF - Automatic transmission fluid :blink: or am I making my name ass? and im not yet clever enough to install that self lube containers.

 

[Jerry Wyss]

Hey guys, were on the water today and the bandit ran very well, think the settings is finally in a good range. Only problem is that my flex shaft broke, think its my own stupidity - ran the boat 5 days ago and did not lube the shaft again. One of my friends told me to remove it after each day of playing, drown it in ATF and lube it with marine grease before the next run - did not do that. Question: what is ATF - Automatic transmission fluid :blink: or am I making my name ass? and im not yet clever enough to install that self lube containers.

I was going to mention "get ready for a broken flex or shear pin" in my last post. Stock or stock piped TT O/B's like to

break either of those two things. The shear pin can be replaced with a short section of propper size paper clip,peened on

the ends lightly to keep it in there.

A porpoising boat (hopping) and needless jacking of the throttle (boat in water) will take either part out fairly quickly.

It's funny (strange) that the more the engine is modded and the more the boat and driving habits are refined, the

less shafts and pins you will break.

As for flexshaft lube I use a very thin (full size) engine assembly grease,, thick grease will rob power from the engine.

I have an unusual method of getting the grease in there,, I remove the nipple on the right side lower unit, directly down

in line with the engine mounting lug. I use a small grease "pistol" thats meant for greasing the sproket that is on the end

of a chainsaw bar&chain. I pump grease thru the hole where the nipple was,, it goes directly to where the gears are. I

also remove the propshaft assmbly and flex shaft and pump some grease in there for the flex.

With a muffler still in place on the lower unit, watch out you don't pump too much thru the propshaft hole. There is a little

passageway that goes between the center of the propshaft assembly and the muffler in the lower halves. Don't wanna

fill your muffler with grease.

JW

 

[camaroboy383]

Hey guys, were on the water today and the bandit ran very well, think the settings is finally in a good range. Only problem is that my flex shaft broke, think its my own stupidity - ran the boat 5 days ago and did not lube the shaft again. One of my friends told me to remove it after each day of playing, drown it in ATF and lube it with marine grease before the next run - did not do that. Question: what is ATF - Automatic transmission fluid :blink: or am I making my name ass? and im not yet clever enough to install that self lube containers.

jaco,, i typically grease the flex shaft once every run or two... also be sure to keep the bevel gears greased.. you can use a small grease gun that you can get at a chain saw shop,, it has a needle on it that will make it easier to get grease it the hole in the lower unit..

atf,,,yes atuo tranny fluid.. same as after run oil... i have never used this method,, i just wipe the shaft down and apply new grease.. only had one breakage in a season..

there are several different shafts for the tt lower.. like 3 runs of tt's shafts,lawless shafts...be interested in seein what shafts your running,,,pic???

alden

 

[camaroboy383]

Hey guys, were on the water today and the bandit ran very well, think the settings is finally in a good range. Only problem is that my flex shaft broke, think its my own stupidity - ran the boat 5 days ago and did not lube the shaft again. One of my friends told me to remove it after each day of playing, drown it in ATF and lube it with marine grease before the next run - did not do that. Question: what is ATF - Automatic transmission fluid :blink: or am I making my name ass? and im not yet clever enough to install that self lube containers.

I was going to mention "get ready for a broken flex or shear pin" in my last post. Stock or stock piped TT O/B's like to

break either of those two things. The shear pin can be replaced with a short section of propper size paper clip,peened on

the ends lightly to keep it in there.

A porpoising boat (hopping) and needless jacking of the throttle (boat in water) will take either part out fairly quickly.

It's funny (strange) that the more the engine is modded and the more the boat and driving habits are refined, the

less shafts and pins you will break.

JW

for sure...couldnt agree more jerry,, my one breakage was from a propoising hull.. ahhhhhhh the abuse that puts on the drive line...

also to add to the shear pin fix... i actually broke about 4 of them.. must be that torque monster jerry built.. after several paper clip breaks,, i ended up finding a drill bit that i pressed into the dog/prop shaft with a little blue loctite.. havnt had a issue since... just another alternative to think about..

alden

 

[Jaco Engelbrecht]

The hobby shop close to me can just sell me the standard thunder tiger flex shaft(AA0417) and already broke 2 of them - any other recomendations? What is a shear pin? (R there okes on here asking this type of dumb questions - Im one - hey but maybe in a year I will have the knowledge to give some awnsers). Luckily my boat does not hop around, but I think my problem is that sometimes I give WOT straight away before the bandit can even get some grip.

Will send you some pics later on of the bandit and the shaft and everything - bottom end is apart to replace the shaft, but im going to bed now, will dream about it.

Thanks again.

 

[camaroboy383]

The hobby shop close to me can just sell me the standard thunder tiger flex shaft(AA0417) and already broke 2 of them - any other recomendations? What is a shear pin? (R there okes on here asking this type of dumb questions - Im one - hey but maybe in a year I will have the knowledge to give some awnsers). Luckily my boat does not hop around, but I think my problem is that sometimes I give WOT straight away before the bandit can even get some grip.Will send you some pics later on of the bandit and the shaft and everything - bottom end is apart to replace the shaft, but im going to bed now, will dream about it.

Thanks again.

shear pin is that tiny pin right behind the prop,,,, go's through the part that drives the prop//the thing with two ears on it that the prop sits against...they push a tiny hollow pin through there.(roll pin),, they tend to break being so small and hollow to top it off... ... did you replace the teflon liner for the shaft???...

wait ....wait...wait... i think i figured it out sittin here typin,,,, you know your shaft breakage issue.... well,,,,,,,back to the prop drive dog shear pin........im guessing that little sucker is bent over and the prop nut is so tight its binding the prop shaft... that will break shafts with ease...

k,,, you said the lower is apart,,right??? now assemble the prop shaft out of the lower, prop, nut, the whole thing.. if not already assembled,,that is...

now spin that sucker,,you feel a wicked drag??? should spin freely... the prop shaft shear pin is what sets the clearance's in those assemblies,,as with others...if the prop was ever over tightened, your done,,pin is for sure bent like a banana,,and for sure will lead to destruction... ive experienced what was stated above and im sure jerry has had his rounds with them as he stated...

for sure worth checking while its apart...

i have a question for you jaco,,, does your hobby shop supply a full line of tt o/b parts???????? like rods,,wrist pins,, cir clips,,and so on???

alden

 

[Tim_Duggan]

Alden,

What do you need?

Tim

PS. I've stopped running my TT now and am experimenting with another completely different hybrid. In my case the TT lower has reached it's reliability limit for a heat race boat.

 

[camaroboy383]

Alden,What do you need?

Tim

PS. I've stopped running my TT now and am experimenting with another completely different hybrid. In my case the TT lower has reached it's reliability limit for a heat race boat.

typically tim i buy what i can find... im in serious shortage of rods,wrist pins,and cir clips.. been a bugger to find.. think i been lookin for them as long as a gadjet pipe..lol

jaco, this is the other fella i was tellin you about, tim knows his tt's... always keep your ears open when these two talk,,, you'll learn alot..

alden

 

[Jaco Engelbrecht]

Thanks guys. Ja the first tank of fuel my prop was over tight and I figured it out when I replaced the shaft and that whole shear pin assembly was like in seized - when I replaced everything that day and tighten the prop, I felt that there was a problem and loosen the prop a bit and yes my prop is tighten correctly now. Im at work now so Im going to assemble everything again later on and c how long the flex shaft will operate. My carb gave me some problems so I were a bit on the over revving side of life, that may also be the problem why it broke so quickly(5 tanks apart), but I will lube the flex shaft from now on everyday after a few tanks. The teflon liner was replaced the previous time, because I could not get the flex shaft out of it, this time the shaft broke just before the shear pin assembly and the teflon liner still looks okay.

My hobby shop can get anything I want from Thunder tiger for my boat - they just dont have a clue on octura props

If the shear pin broke, where do u get that small sized / propper size paper clip?

 

[Jerry Wyss]

Thanks guys. Ja the first tank of fuel my prop was over tight and I figured it out when I replaced the shaft and that whole shear pin assembly was like in seized - when I replaced everything that day and tighten the prop, I felt that there was a problem and loosen the prop a bit and yes my prop is tighten correctly now. Im at work now so Im going to assemble everything again later on and c how long the flex shaft will operate. My carb gave me some problems so I were a bit on the over revving side of life, that may also be the problem why it broke so quickly(5 tanks apart), but I will lube the flex shaft from now on everyday after a few tanks. The teflon liner was replaced the previous time, because I could not get the flex shaft out of it, this time the shaft broke just before the shear pin assembly and the teflon liner still looks okay.My hobby shop can get anything I want from Thunder tiger for my boat - they just dont have a clue on octura props

If the shear pin broke, where do u get that small sized / propper size paper clip?

Make sure the carb is down and tightened,, also the flywheel nut (starting cone) thightened. These two things can do a

horror show act on ya if both get loose,, the carb comes loose at full throttle, zings up the engine and quickly stops and

ploop, the flywheel goes right to the bottom.

The "paper clip" fix is not limited to just paper clips,, "T" pins , filed down small Allen wrenches or anything that can

be hand forced or tapped into them small holes,, it can be a tough little project for some people without damaging things.

 

[camaroboy383]

Thanks guys. Ja the first tank of fuel my prop was over tight and I figured it out when I replaced the shaft and that whole shear pin assembly was like in seized - when I replaced everything that day and tighten the prop, I felt that there was a problem and loosen the prop a bit and yes my prop is tighten correctly now. Im at work now so Im going to assemble everything again later on and c how long the flex shaft will operate. My carb gave me some problems so I were a bit on the over revving side of life, that may also be the problem why it broke so quickly(5 tanks apart), but I will lube the flex shaft from now on everyday after a few tanks. The teflon liner was replaced the previous time, because I could not get the flex shaft out of it, this time the shaft broke just before the shear pin assembly and the teflon liner still looks okay.My hobby shop can get anything I want from Thunder tiger for my boat - they just dont have a clue on octura props

If the shear pin broke, where do u get that small sized / propper size paper clip?

well you can find that paper clip anywhere they are sold,, just be sure to get the solid ones... some have relief's pressed into them,/small slices/....those are no good and will break almost immediately... or you can use the drill bit trick.. the drill rod is very hard and is not easy to bend or break..

the other option is to just change the prop shaft as they are not a servicable part... but then you end up with the same thing after some time..

all thunder tiger o/b parts are difficult for us to get here in the usa.. they have stopped importation to the u.s do to the ever falling economy...

so now this could be interesting,, could you get us some prices on parts???

connecting rod AN0349

crank AA0263

wrist pin AA0350

cir clips AA0351

piston/sleeve AN0549

hinge plate assembly PN0104

crank bearings PN0166

if you can get numbers on the above parts that would be great.. let me know..

alden

 

[Jerry Wyss]

As far as the parts go Alden I think you can still buy a "TT PRO-21BX-R(P) / 9436" and get all those parts for around $95.

Its a buggy engine , has a SG crank but it's all same same as the O/B powerhead.

The headbutton is part of the air head but nobody wants that button anyway,, unless they want to run a near stocker with

air cooling??? :wub: wub

??? engine bearings from TT???

 

[Jaco Engelbrecht]

No the carb is sorted - Im running nitro engines for 11 years now, mostly monster trucks (My favourite one were the TT EK4 with the .70BX motor thats usualy used on helicopters). No the thing was that I were a bit stupid - the .21 did not want to rev up straight away, so I leaned out the highspeed needle till it picked up revs normaly, but it would stay at full revs for 2-3 sec and then sounded like it was rich, so I leaned it out more and more. The problem was the lowspeed needle(about 5 turns out - dont know how it got there, maybe some ghosts) so I set it much leaner and the highspeed needle about a turn & half richer. Now its tip top again - dont know why I were so stupid.

I will go and check that parts for you at the hobby shop. Do you guys from America know that we here in South Africa must save 10 times more to go to America than you coming here. 1 Dollar equals 10 Rand. Import me please.

 

[camaroboy383]

No the carb is sorted - Im running nitro engines for 11 years now, mostly monster trucks (My favourite one were the TT EK4 with the .70BX motor thats usualy used on helicopters). No the thing was that I were a bit stupid - the .21 did not want to rev up straight away, so I leaned out the highspeed needle till it picked up revs normaly, but it would stay at full revs for 2-3 sec and then sounded like it was rich, so I leaned it out more and more. The problem was the lowspeed needle(about 5 turns out - dont know how it got there, maybe some ghosts) so I set it much leaner and the highspeed needle about a turn & half richer. Now its tip top again - dont know why I were so stupid.I will go and check that parts for you at the hobby shop. Do you guys from America know that we here in South Africa must save 10 times more to go to America than you coming here. 1 Dollar equals 10 Rand. Import me please.

Ya for sure 5 turns on the low speed will mess ya all up. Glad you figured it out.

Thats what i was thinking. The exchange rate might save some dough on our end,, but then again it could just work out the same. But regardless its good to know that you can get parts.

Let me know what you want for props, ill grab them and ship them to you if you want. I can s/b them for you also if you want.

Like jerry said though the two props that work on tt's are the x637 and the x640..also have a couple lawless flex shafts if you want to try a couple.

If the parts thing works out would you mind shipping to the us???

Maybe we can work a deal..

J-dubs,, im just basicaly sourcing parts. Might buy a bunch and supply them to people in need here in the us. Ebay ect. Just trying to weigh out the currency exchange.

But like you said might still be cheaper to buy the buggy engine from tt4u..

Alden

 

[Jaco Engelbrecht]

Alden - Will check that prices for you on Thursday and what the cost will be for shipping.

 

[camaroboy383]

Alden - Will check that prices for you on Thursday and what the cost will be for shipping.

thanks jaco....appriciate it..

 

[camaroboy383]

Alden - Will check that prices for you on Thursday and what the cost will be for shipping.

thanks jaco....appriciate it..

Well now, guess i wont be buying parts from your neck of the woods anytime soon.lol.lol. Around 300 us dollars for the engine,and shipping around 200, geez i thought we had it rough with hard to find parts.lol.

Anyway how is tuning goin for you jaco? Get it squared away? Just remember,small adjustments,and youll get there, one day.lol.

Alden

 

[Jaco Engelbrecht]

The bandit is running fine, must maybe just give a bit of negative pitch on the motor - bow is a bit high and with some wind, think it will flip. Asked this question before - What is a nice play around rough water boat, some poeple say the V`s are okay, must be nitro - I want names.

 

[camaroboy383]

The bandit is running fine, must maybe just give a bit of negative pitch on the motor - bow is a bit high and with some wind, think it will flip. Asked this question before - What is a nice play around rough water boat, some poeple say the V`s are okay, must be nitro - I want names.

well you will have to be a little more specific,,as in what engine size hull your looking for and what your willing to spend.. how rough we lookin??? a v-hull or large cat will take rough water pretty well..but then again, rough water is a task for any r/c boat..