Rigger Toe in

[Mike G]

Guys have a look at the twin rigger in these pics and tell me if the toe in doesn't look like it is too much? How much is normal? And what does it do for you? I'm just dialing in a new Gas rigger for myself and am wondering.

http://p086.ezboard.com/fjimsrcboatdockfrm...icID=3285.topic

Thanks

 

[Danny Bull]

Hi Mike, A bit hard to tell from those photos. I have found that if toe in is required, then something else may not be quite right. Looking at things like thrust angle on the strut, rudder size, depth and placement, sponson angles and so on may be of help. I'm not saying that toe in is a bad thing but you need to remember to keep the turn fin parallel to the tub in order to keep the boat tracking straight regardless of how much toe in is applied.

Anything in or on the water creates drag so the idea is to keep that to a minimum to eliminate the need for correction or adjustment in other areas to compensate. I'm sure other boaters have there own views and look forward to reading them.

Cheers, Danny.

 

[Preston_Hall]

Usually 1/16" toe in. This does the same thing as on a car, it keeps the boat from hunting while going straight. It will possibly help correct prop walk as well. The fin should be fine at this toed in angle.

 

[gil sonsino]

No "toe in" on SG's or SGX's and boats run absolutely straight.

Gill

 

[TimD]

No "toe in" on SG's or SGX's and boats run absolutely straight.Gill

Mine tracked differently on exits of turns until I added 1mm toe in on each side. Now it tracks the same every single lap. No other changes made at all.

 

[nitrotoys]

Mike,

Both my gas riggers there not set in. Both streight. Ones a midwest missle, other is am not sure of make. But both handle well and drive streight.

THe midwest one has rudder on right, other one on the left, and theres a HUGE difference on turning, Could be the boat design, or just the rudder. but the one with the rudder on the left turns so much faster with less throw.

Tom

 

[Danny Bull]

Hi Tom, Does the rigger with the left side rudder turn better or worse, as you have stated that it turns faster with less rudder throw. I have covered this ground with others before and am allways curious for different opions.

Cheers, Danny.

 

[Preston_Hall]

Mike,

Different boats will always do different things. Yes, perfectly straight sponsons technically would be faster. Will you ever see it? Probably not. Toe in could possibly put the front in a "bind" causing the boat to not handle well. It could also improve drivability. If you want to try both ways then just drill two sets of holes and you can make instant changes at the lake. Regardless, I would always start with the manufacturer's recommendation and go from there. Maybe you could test both setups and let us know the results.

 

[nitrotoys]

Danny,

Both riggers are totaly different in in set up.

The one with the rudder on the left, was the way they said to set it up. and YES It does turn better all around in turning. Now if i was to set one up again, I dont know if i would put it on the right or left.

Only problem with the rudder on the left, it seems to cause more hooking that the one on the right.

Just my exp from my 2 riggers.

Others may want to comment.

Tom

 

[ClayGlover]

Tom, do they run rear sponsons? I see a lot of gas riggers with no rears. It's interesting that some builders choose not to run rear sponsons on a Heat Race boat. They can make a huge difference in corners, and could help with a hooking problem. fwiw just from experience with nitro boats

 

[nitrotoys]

Clay,

Neather one has rear sponsons. IT turns well, dont load down or bounce. pull through the corners nice.

Tom

 

[ClayGlover]

I guess the torque of the gas motors handle the transom's ride hight in the turns a little better than nitro. But they can help hook up the rear if a boat likes to spin in the turns

 

[nitrotoys]

Torque steer? I have that with my midwest one, 260 mod motor tho.

Lots of torque with a gas engine. It will turn a cut down 2170 no problems.

But it dont bottom out to where it needs the rear sponsons in the turns.