Projects At Home During Lockdown

[Grumph]

The left exhaust valve has been too tight hasn't it?

Yes and no. Yes, as things have settled post rebuild, it's gone tight - but as the valve face has eroded clearance has come back.
It went together using the RGS clearances in the book - which were the most generous std ones.
You never know just what valves are in these things unless new have gone in when they're built.

I'd still think that you might get away with just a lap on the new valves. What I can see of the seats looks pretty good.

The state of the art mechanically cut seats and valves common in modern reconditioning are IMO over the top in these old air cooled engines.
A good seal is a good seal regardless of how it's done - but these things move around so much hot that it's a moving target.

Forks - How are the 550 Yamaha ones for length ? I'd point out here that the classic trials guys are simply putting Gas Gas internals in old forks. I've had BSA forks with the Taylor Dow conversion.
They're nowhere near modern standards.

[James Deuce]

I'm not as techonological as you fellas, so I'm going to remove the belly pan, pop the front sprocket cover off, lose all the bolts and washers, clean 6 years of chain spooge out and then glue the front sprocket cover back on with super glue and reinforce it with duct tape.

[caspernz]

Yes and no. Yes, as things have settled post rebuild, it's gone tight - but as the valve face has eroded clearance has come back.

This line confused me, for if the valve seat or valve face are eroding the clearance should close, well it did when I was learning about this stuff.

Nice project to follow though

[Grumph]

This line confused me, for if the valve seat or valve face are eroding the clearance should close, well it did when I was learning about this stuff.

Nice project to follow though

You are of course correct. Kick would have been chasing a tightening valve.

In my defence, check the time of my post. I plead sugar deficit - and advancing senility.

Still think he might get away with just a lap of the new valves.

I'll go away and weld something quietly.

[husaberg]

Yes and no. Yes, as things have settled post rebuild, it's gone tight - but as the valve face has eroded clearance has come back.
It went together using the RGS clearances in the book - which were the most generous std ones.
You never know just what valves are in these things unless new have gone in when they're built.

I'd still think that you might get away with just a lap on the new valves. What I can see of the seats looks pretty good.

The state of the art mechanically cut seats and valves common in modern reconditioning are IMO over the top in these old air cooled engines.
A good seal is a good seal regardless of how it's done - but these things move around so much hot that it's a moving target.

Forks - How are the 550 Yamaha ones for length ? I'd point out here that the classic trials guys are simply putting Gas Gas internals in old forks. I've had BSA forks with the Taylor Dow conversion.
They're nowhere near modern standards.

https://sportsvalve.com/standard-spo...mping-control/
if he buys these he will be able to reminisce about rhe MHR he sold with the guy that owned and ran the MHG bike.

[Kickaha]

You never know just what valves are in these things unless new have gone in when they're built.

Forks - How are the 550 Yamaha ones for length ?

Couldn't get new valves at the time so the valves which came with the head went back in

The XJ forks would be a bit longer and I'd still want them kitted so that's more work than it's worth

if he buys these he will be able to reminisce about The MHR he sold with the guy that owned and ran the MHG bike.

They look interesting but I'll have to find something to measure more accurately as the BSA forks with a rough measure come up right at that lower limit for installation

The fact these forks don't have a damper rod may make it somewhat difficult as well

[husaberg]

Couldn't get new valves at the time so the valves which came with the head went back in

The XJ forks would be a bit longer and I'd still want them kitted so that's more work than it's worth



They look interesting but I'll have to find something to measure more accurately as the BSA forks with a rough measure come up right at that lower limit for installation

The fact these forks don't have a damper rod may make it somewhat difficult as well

no idea looking at them they appear to be an emulator on a stick for adjust ability.
but if i was doing it i would get a pair of cbx550 cbx750 or similar forks chuck a set of shrouds on the top and only the rivet counters will notice or care. and you would have already upset those with the TLS front.
from what i understand the tribsa 2ls also fits the Norton hub with minor mods.

actually cbx750 have adjustable damping i think? decent size similar weight bike and 39mm, so potentially cheap stanchion size as same as a showa harley i think

or 550 comstar to spoked with inboard

https://www.gazzz-garage.com/2018/09...wheels-part-1/
https://www.gazzz-garage.com/2018/09...wheels-part-2/

[HenryDorsetCase]

I'm not as techonological as you fellas, so I'm going to remove the belly pan, pop the front sprocket cover off, lose all the bolts and washers, clean 6 years of chain spooge out and then glue the front sprocket cover back on with super glue and reinforce it with duct tape.

It will not stay put without at least four zip ties. Just saying.

[jellywrestler]

In my defence, check the time of my post. .

yes but at that hour on Anzac day it could also be due to a few early morning rums....

[Kickaha]

no idea looking at them they appear to be an emulator on a stick for adjust ability.
but if i was doing it i would get a pair of cbx550 cbx750 or similar forks chuck a set of shrouds on the top and only the rivet counters will notice or care. and you would have already upset those with the TLS front.
from what i understand the tribsa 2ls also fits the Norton hub with minor mods.

actually cbx750 have adjustable damping i think? decent size similar weight bike and 39mm, so potentially cheap stanchion size as same as a showa harley i think

or 550 comstar to spoked with inboard

I actually know where the're a whole CBX550 front end, but fuck going to that amount of work to sort out a lot simpler problem

[James Deuce]

It will not stay put without at least four zip ties. Just saying.

Noted. I will write that on a piece of paper so it can be moved and eventually thrown away.

[husaberg]

I actually know where the're a whole CBX550 front end, but fuck going to that amount of work to sort out a lot simpler problem

its just spoking a rim and a cnc cuta ring on the outside pretty sure flet or a waterjet dude could knock you out one easy.
where is your sense of adventure Warwick, kiwi culture is built on doing DIY OTT OCD stuff.
you were going to respoke the rim anyway weren't you?
Then put in new steering head bearings and wheel bearings and brakeshoes anyway...........

I have a 19 inch spoked flanged alloy rim here off a tx750 or something.
they look like this

[Kickaha]

its just spoking a rim and a cnc cuta ring on the outside pretty sure flet or a waterjet dude could knock you out one easy.
where is your sense of adventure Warwick, kiwi culture is built on doing DIY OTT OCD stuff.
you were going to respoke the rim anyway weren't you?
Then put in new steering head bearings and wheel bearings and brakeshoes anyway...........

Yeah yeah, fuck all that shit

Got a couple of new Excel rims on the way, need to find a half width front A65 hub for what I want to do, already have a rear QD coming

[husaberg]

Yeah yeah, fuck all that shit

Got a couple of new Excel rims on the way, need to find a half width front A65 hub for what I want to do, already have a rear QD coming

Have you tried Bland.
Are the rims undrilled?

[sidecar bob]

Pulled a couple of bits off the GSXR to give it a clean today.
Some stuff was a bit hard to get to.