Benelli 750 sei

[John H]

A suggestion would be to keep the disks bolted to the hub and get them turned before your lace the wheel up again. Should machine easy..

[Lotus54]

Good idea. Thanks

[John H]

Have your parts arrived yet?

[Lotus54]

No, post office lost them, so seller is sending new order out. Probably today

[John H]

Shipping these days is marginal at best. I've been expecting a garage door part for three weeks now. USPS tracking says it's 'pending'. Shipper says they sent it. UPSP says 'pending' means shipper dropped it off but it hasn't been scanned for destination yet. I assume it's lost so will order it again.
Have you resurfaced your brake disks yet. I think we can do it on my big lathe if you are up for it.

[Lotus54]

I have not done anything about the discs yet. Might work fine on the lathe- they really won’t take that much I don’t think.
The Wheel is already together, but rotors are not mounted.

[Lotus54]

Front wheel is done (now clean and finish polish)

I’m trueing the spare rear now- just got in the spokes for the original rear and the 4-shoe drum wheel I’m putting on my 250 SS.

[Lotus54]

I have the original rear wheel apart and the hub 1st go through vaporhone. Looks good, but I’ll do one more time.
The sprocket carrier is separate on this bike, so I will vaporhone it and of course replace all bearings. The wheel has 2 double row ball bearings, sprocket carrier another 2 single row.
I’ve been putting off cleaning/polishing the original rear rim- lots of work and messy. But I would like to get it done soon and get it laced back up with my ‘jig’. I want to start on the 4-shoe drum setup for the 250- but want to get this done first so I don’t have TOO much stuff going on at once.
I got all my bearings in from Kaman- those double row ones are rather expensive. But I imagine they will last as long time for the amount of use I plan on doing.

I’m investigating adding a primary chain tensioner from a Honda CB650/4. Originally there is no primary chain tensioner- not really too big a deal but I remember at idle it would ‘grumble’ after it had some miles on it. I see where this one had hit the case. I’m replacing the chain anyway- but looks like I can do it with almost no mods to the case. Some weld a tab on the crankcase, but I don’t want to heat it up like that and take any chances.

The engine is very similar to the Honda 500/4, but not very many parts will fit. Bearings all bigger/wider, bigger shift forks- everything a bit heavier duty. But they most certainly took the starting dimensions of the engine/case and then reworked Italian style.

[John H]

Seems unusual not to have a primary chain tensioner. Hope the Honda part is adaptable.

[Lotus54]

The Hondas of that era didn’t have one either. It is pretty short. I think the 650/4 was first one to have it. Although I could esily be mistaken on that.
My understanding is generally, Hy-Vo chains don’t have tensioners.
But obviously not always since the Honda 650/4 has one (at last the SOHC- not sure about the DOHC).