Ed L
Veteran
kinger
VIP Member
So you must have got your electrical issue with the gauge pack working uh? Was it the hand warmers causing that?
Do you think the grinding is the chain case starting to slip into reverse? There is a spring in there that keeps it away from drive gear, is that spring installed? It look about the size of a pen spring.
Side note that thing is cool as heck! How fast does it go and how do you cool those twin engines? do you have a foot controll for both engines or one control for each? Love it!
Do you think the grinding is the chain case starting to slip into reverse? There is a spring in there that keeps it away from drive gear, is that spring installed? It look about the size of a pen spring.
Side note that thing is cool as heck! How fast does it go and how do you cool those twin engines? do you have a foot controll for both engines or one control for each? Love it!
Ed L
Veteran
So you must have got your electrical issue with the gauge pack working uh? Was it the hand warmers causing that? The main relay - coil goes to the CDI, and needs the crank signal to go low. I had my Fuel Pump on this circuit
Do you think the grinding is the chain case starting to slip into reverse? There is a spring in there that keeps it away from drive gear, is that spring installed? It look about the size of a pen spring. Yes it is there the problem is a slipping grinding noise, will record and try to post.
Side note that thing is cool as heck! How fast does it go and how do you cool those twin engines? Geared to 128 MPH will probally never see it though, cool with raditors. do you have a foot controll for both engines or one control for each? Cable pull throttle with servo bias on turns.
Do you think the grinding is the chain case starting to slip into reverse? There is a spring in there that keeps it away from drive gear, is that spring installed? It look about the size of a pen spring. Yes it is there the problem is a slipping grinding noise, will record and try to post.
Side note that thing is cool as heck! How fast does it go and how do you cool those twin engines? Geared to 128 MPH will probally never see it though, cool with raditors. do you have a foot controll for both engines or one control for each? Cable pull throttle with servo bias on turns.
kinger
VIP Member
Do you have the right chain and tension set on that one? count the links and its good to measure the overall length to check for stretching. Its a basic set up so its either jumping cogs, grinding teeth, ot grinding splines on the shaft. Sweet ride! Can I ask how much it would cost to duplicate?
Ed L
Veteran
I think the gearbox chain is jumping under high torque, still not sure, but I had a friend brace himself in the passanger seat and watch and listen as I accelerated one motor only. The chain is in tolerance gears look fine bearings seem fine, but I can't put the same load as the motor on them. I would think one of the shafts would have to move for this to happen. Going to try to post a vid with sound for second opinion. might switch the gears and chain with the other motor to see where the problem goes from there.
-Can I ask how much it would cost to duplicate? Countless hours as I hand built everything including the carbon fiber body and about $40,000 -Ed
-Can I ask how much it would cost to duplicate? Countless hours as I hand built everything including the carbon fiber body and about $40,000 -Ed
RX1DERFULL
Extreme
Any chance that one of your bearings is pooched and your are loosing the position of the shafts under load??
Ed L
Veteran
Not sure, But that is what I am thinking, also not sure which bearing or how to find out. When I move the shafts side to side they seem fine and I put new bearings in (or inspected) when I put together now 1.5 years ago.
Ed L
Veteran
I swapped the reverse gears, chain, and cover. Problem stayed with the same motor. Found some play in the CV joint will check that next. Is it possible that the reduction gear in the crankcase could slip? I have a video of a 5 psi run getting into the throttle easy (about 1/2) due to the slipping.
http://www.youtube.com/watch?v=yl6PzpCoF6A
http://www.youtube.com/watch?v=yl6PzpCoF6A
mulot30th
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Ed L said:
If that would happen, I guess huge crankcase / engine damage would have happened a second or two later...
Still a strage thing your problem
kinger
VIP Member
Wow that sounds horrible. Are the CV joints able to be swapped to the other side, I guess the only rational would be to keep moving parts till the issue moves. What a PITA.
I'm trying to think, engine to clutch, clutch to secondary, secondary to gears, through bearing, to lower gear through chain, through bearing to axle. If the axle is not slipping then its in the gears, if the spilines are clean and its not there, then its in the chain, if the chain swapped and is ok on other side then its in upper gear, if that is swapped and ok, then its in the cluthes, and if those check out it must be in the engine. What year engines do you have? the 03's are the strongest and loudest with the stright cut reduction gears, the 04+ are helical and quiter but some turbo guys have stressed them and got them to fail, usually in asphalt where they get loads of traction.
sorry your issue seems to be unique.
I'm trying to think, engine to clutch, clutch to secondary, secondary to gears, through bearing, to lower gear through chain, through bearing to axle. If the axle is not slipping then its in the gears, if the spilines are clean and its not there, then its in the chain, if the chain swapped and is ok on other side then its in upper gear, if that is swapped and ok, then its in the cluthes, and if those check out it must be in the engine. What year engines do you have? the 03's are the strongest and loudest with the stright cut reduction gears, the 04+ are helical and quiter but some turbo guys have stressed them and got them to fail, usually in asphalt where they get loads of traction.
sorry your issue seems to be unique.
Ed L
Veteran
Wow that sounds horrible.I thought it sounded better in the clip cause the tire spin drowning out the grinding noise Are the CV joints able to be swapped to the other side,Yes, they are s-10 4WD front axles,will replace due to free play it the one side, but I don't think its slipping cause the boot is clamped thght and would rip I guess the only rational would be to keep moving parts till the issue moves. What a PITA. 
I'm trying to think, engine to clutch,Can this slip (jump) without blowing apart like Mulot Turbo said, Keyway, spline? never had one apart clutch to secondary,will pull both clutches and look closer, bearings seem fine secondary to gears, through bearing, to lower gear through chain,swaped all but the drive gear looked good though through bearing to axle. If the axle is not slipping then its in the gears, if the spilines are clean and its not there, then its in the chain, if the chain swapped and is ok on other side then its in upper gear, if that is swapped and ok,Didn't swap the drive gear on the secondary shaft, inspected and marked the shaft to gear not slipping then its in the cluthes, and if those check out it must be in the engine. What year engines do you have? the 03's are the strongest and loudest with the stright cut reduction gears, the 04+ are helical and quiter but some turbo guys have stressed them and got them to fail, usually in asphalt where they get loads of traction.
Both engines are out of wrecked sleds Problem engine (left) 03 4000 miles, replaced secendary shaft bearings and updated collor. Right motor 04 500 miles
sorry your issue seems to be unique. Thanks for the help!
The noise sounds like its on the speed (engine 10200RPM) end or output shaft 8000 RPM not the drive wheel 1400 RPM torque side
I'm trying to think, engine to clutch,Can this slip (jump) without blowing apart like Mulot Turbo said, Keyway, spline? never had one apart clutch to secondary,will pull both clutches and look closer, bearings seem fine secondary to gears, through bearing, to lower gear through chain,swaped all but the drive gear looked good though through bearing to axle. If the axle is not slipping then its in the gears, if the spilines are clean and its not there, then its in the chain, if the chain swapped and is ok on other side then its in upper gear, if that is swapped and ok,Didn't swap the drive gear on the secondary shaft, inspected and marked the shaft to gear not slipping then its in the cluthes, and if those check out it must be in the engine. What year engines do you have? the 03's are the strongest and loudest with the stright cut reduction gears, the 04+ are helical and quiter but some turbo guys have stressed them and got them to fail, usually in asphalt where they get loads of traction.
Both engines are out of wrecked sleds Problem engine (left) 03 4000 miles, replaced secendary shaft bearings and updated collor. Right motor 04 500 miles
sorry your issue seems to be unique. Thanks for the help!
The noise sounds like its on the speed (engine 10200RPM) end or output shaft 8000 RPM not the drive wheel 1400 RPM torque side
