Motorcycle Project

[Keith LeBlanc]

Sounds like a bad situation saved by good foresight and planning. Amen to the pay me now or pay me later and later is gunna cost a whole lot more.

[turbochris]

almost w you and twice w anders.... I have my pump w a deans connector I just plug it into a lipo pack to turn it on. being lazy kept me out of trouble i think..

[jettoymaker]

Can't be too careful when we play with things that have zero tolerance for slack or corner cutting. It happens all so fast.

Checked everything over three times and double checked what was left..all good and I tried to start again on friday so I could finally adjust the multi-speed idle circuit; but found the start rpm to be right down (almost half)?? The starter has been operating perfectly up till now, so todays tests should place where the shortfall is. The constant delays are killer, but that's life. Good news is there can't be too many problems left to get around and we can start seeing data coming in to share.

I suspect the very secondhand 24V starter relay may be the current culprit.

Regards, Andrew

[jettoymaker]

Well that was easy...rpm tested the unit and found motor start rpm down to 8,000 with 19V showing on start cables (24V going in on disconnected cables). Pulled starter out and stripped to find one of the four carbon brushes had partially disintergrated (easy five minute fix) and left carbon powder deposits throughout the starter motor. This was the 'much better' secondhand starter motor that replaced the much scabbier one we started the program with. Interestingly enough, it has had similar cycle times (around 50-60 full starts/cycles: not including unloaded cycles which would then take starter operations to around 80-90 operations for each starter motor..give or take) so it may be that the very high rpm/amps/volts each starter motor goes through above it's design parameters, is as much as the units' can take; but I seriously doubt this to be the case, as each unit encountered different problems (the scabbier motor became unable to run full current through it's windings) and each unit has had unknown pasts, so we can't say what they went through before our version of torture chamber. Logic would dictate that if I get a new motor to modify, then it should easily run 200-300 (hopefully more) full starts once all the testing is complete.

Only one brush had broken and "removed" itself with a clear "chunk" missing, while the other three just have accretion damage with smaller chips resulting from the loose materials balling and catching under their leading edges. No damage shown to rotor or commutator. As noted, it's a five minute fix and as I have several brush/motor replacements, it will be able to test again tommorrow and full test run at the end of the week.

I still have installation issues with the large brushless starter motor which would require a reasonable amount of "moding" to the current systems and B1 which are time consuming, but I still have plans to install it and test as we still dont know how well it will do and as there are mods to do to the 10/98 to improve it's start characteristics, it will wait, as we know we can successfully start B1 with the current starter and systems already developed/installed which generally means no further delays than necessary.

The new batteries appear to be working well and I am still hanging out to see if the two onboard batteries are going to do all of the heavy start work on their own without a start cart, which was also what friday's test was to establish once and for all.

The very secondhand 24V starter rely is doing just fine, so we are still learning. LOL

Regards, Andrew

[racket]

Hi Guys

Andrew just sent me a pic of the bike , with its "Dyno Exhaust" attached , .................hopefully some horsepower numbers soon .



Cheers
John

[enginewhisperer]

looking forward to some numbers!

[pitciblackscotland]

Hi John,
Hehehe looks good, Andrew will pop in later today so he will tell some story, he maybe can do a run next week??? so i might be able to come along and help out if i can.

Cheers,
Mark..

[pitciblackscotland]

Hi John,
I just realised when looking at the new picture of B1 next to your avatar, that you can see who's granddad is who.LOL

[racket]

Hi Mark

LOL.......only 20 years or so difference in age , maybe "father and son" ;-)

Cheers
John

[racket]

Hi Guys

Andrew had a dyno run done on the bike recently ..............




P2 was at only ~25psi for this initial test .

The bike is currently geared for a top speed of ~205 kph - 125 mph simply to make it a bit easier to ride around at low speeds , ......the maths give a rear wheel torque of ~900 ft lbs at stall if full throttle ( 40 psi P2) is used for the gasifier .

The “extrapolated” torque curve/line in the readout is indicating the expected 2:1 torque multiplication between stall and max horsepower N2 rpm .

LOL...........its difficult to convince the dyno guys that they can give it full throttle at nil speed whilst in "top gear" , but we can easily extrapolate back to stall as the torque "curve" is more of a straight line

I'll be looking forward to the "full throttle" run as the numbers are encouraging

Cheers
John

[racket]

Hi Guys

Progress is being made , next dyno run in a week or so's time at full throttle .

Cheers
John

[racket]

Hi Guys

Latest vid of the bike during high power static testing www.youtube.com/watch?v=uQpkMurCDlo

Cheers
John

[racket]

Ooops , Link not working :-(

[racket]

Try this one www.youtube.com/watch?v=mWt9Pf3oY8s

[pitciblackscotland]

Hi John,
Shes making some sweet noise

Cheers,
Mark.