Dusty's 37 Indian Bonneville racer

[Cimino289]

Looking killer Dusty

[KG]

Wicked!

[DustyDave]

With both tanks in place.

I'll leave the tank mounts just tacked until I get the engine in it to be sure. I'll tear it back down tomorrow and tig the rest of the rear section. The ruler shows 8 1/2 " with a real front tire that's not flat proly another 1" I think I couldn't want it any higher and it'll adjust down till it drags.
Dusty

[flatman]

you gonna gasport the pistons? Not sure if this works for a blown motor? Any idea on compression ratio? What kind of rpm will the motor be turning? If mums the word I understand you Bonneville guys are kinda quiet on this reguard. LOL! I talked to Bob Nichols (rip) and he said his SS turned 10,500. I found it a little hard to believe tho! I asked Max Bubeck (damn it, also RIP) about his Chout and if I remember he said it was about 4700 rpms thru the trap ? He also said he was running a single 35 chain on the primary for reduced drag and was also high gear only, also for drag. Drilling holes in the clutch basket would reduce spinning weight but those things are harder than the hubs of hell. Well anyway keep the updates coming, I like all the machining and fabricating. Looks fantastic already.

[DustyDave]

you gonna gasport the pistons? Not sure if this works for a blown motor? Any idea on compression ratio? What kind of rpm will the motor be turning? If mums the word I understand you Bonneville guys are kinda quiet on this reguard. LOL! I talked to Bob Nichols (rip) and he said his SS turned 10,500. I found it a little hard to believe tho! I asked Max Bubeck (damn it, also RIP) about his Chout and if I remember he said it was about 4700 rpms thru the trap ? He also said he was running a single 35 chain on the primary for reduced drag and was also high gear only, also for drag. Drilling holes in the clutch basket would reduce spinning weight but those things are harder than the hubs of hell. Well anyway keep the updates coming, I like all the machining and fabricating. Looks fantastic already.

Proly won't talk much bout piston, head shape or cam timing. But right now I have no plans to drill into the top ring land.

I'm not expecting to make usable power above 4000 Talked to James Mosher that runs the Twin Scout (2 ea 57 cid Scout engines NA Nitrous) and he said that he turns as fast as 4200 but the power is already dropping off.
For Bonneville I cant see any reason for a light rotating mass, got 3 miles for it to change rpm. For other uses the rotating mass was way to high. I suspect Indian kept it that high because of the crash box. A scout instantly shifts a little better when Chief flywheels go in.
Dusty

[DustyDave]

Start of replacement posts for the lost year I only have copies of what I posted so the replies are missing
Dusty
The heads are done!

Ya don't gets ta see the combustion chambers piston heads or know cam specs at this point. But I'll talk bout most anything else

[DustyDave]

proof of concept for the hydraulic clutch. The foot clutch worm moves the clutch .085" out, this first prototype moves .150"

Don't need much changing but must move the line fitting outboard and change the bore a little. I'll be laying down way too much for the foot clutch to be handy. Had originally planed on cable operated setup. but sumptin similar caught my eye.

Dusty

[DustyDave]

Back appart to enlarge the cylinder and make a new piston.


The cylinder is certainly a unhandy shape and size to machine

Dusty

[DustyDave]

Got the crank assy balanced this morning. And forund out right away that I didn't have any of the thrust washers I needed to centralise the flywheels in the case so I went to get my piece of 4140 prehard to cut a couple and the last asshole to cut one used all the stock that was turned to main thrust size, was plenty sized for rods. So I spent the afternoon whittling the end of the prehard to size. That shit is a pain in the ass to cut. If'n I weren't so cheap I could pay Jerry Grier $28.00 each plus shipping, proly only take 4 or 5 to get the fit I want.


Dusty

[DustyDave]

Made the head washers out of 4140 just coz I had it.

Dusty

[DustyDave]

Got a little sumptin done today

Dusty

[DustyDave]

Made the head washers out of 4140 just coz I had it.

Dusty

[DustyDave]

Started making the head studs out of grade 8 bolts. I'm cutting each one to be a tight fit in the cylinder. So far most are .002 to .0035 oversize.

Only a few more to half way. I'll have to trim the one over the intake manifold they are shorter than the rest.

Dusty

[DustyDave]

I know that there is a release bearing holder in that bar just got ta keep whittling.

Mocked up the primary and heads Cuz I had ta see.

Dusty

[DustyDave]

I know that there is a release bearing holder in that bar just got ta keep whittling.

Mocked up the primary and heads Cuz I had ta see.

Dusty