Author Topic: CB750 finned starter cover (Read 5226 times)

wolf550 · « **Reply #100 on:** May 06, 2023, 06:32:06 PM »

i think I have to build up the bottom lip more
I layered the inside of the starter what should have been the amount that would shrink after the last cover did not fill all the way through

wolf550 · « **Reply #101 on:** May 06, 2023, 06:33:27 PM »

the next step would be to remove a layer and try that
but to remove 1 layer I would have to remove all layers and start over

wolf550 · « **Reply #102 on:** May 06, 2023, 06:35:08 PM »

luckily I have another cover from the 71 motor I can use but I think I am going to save that for the super tall oil pan fins next
I think that one will look awesome!

wolf550 · « **Reply #103 on:** May 06, 2023, 06:40:33 PM »

hey bert
i forgot to ask you how you wanted your cover?
keep as is?
do a light sanding to remove casting look and make smooth?

wolf550 · « **Reply #104 on:** May 06, 2023, 06:42:31 PM »

I always liked the look of the casting and its imperfections

wolf550 · « **Reply #105 on:** May 06, 2023, 06:46:39 PM »

I have to find out how they cast most of the covers because they never have gates or sprues on the outside
you only see them from the inside
I tried this before with not too good results but i dont have all the tools required to do what I think is needed and I do in my head to solve this problem
as you may have seen with my other parts that have been casted the areas were deburred and smoothed leaving little or no sign of them
on this one I did a slow burr to replicate the sand look

wolf550 · « **Reply #106 on:** May 12, 2023, 06:45:17 PM »

had a little head cold this week so no real progress on the covers.
felt pretty good today to start work on the second cover.
I dont get what happened
maybe it was the way it was cast or a different steps but this one came out flat

wolf550 · « **Reply #107 on:** May 12, 2023, 06:49:49 PM »

so I cut the gates not flush but about a mm from the bottom of the cover
then I worked on the inside grinding it
then I sanded fitted sanded fitted sanded and fitted
each time not getting that hobble like the first one did

wolf550 · « **Reply #108 on:** May 12, 2023, 06:53:21 PM »

after fitting I started sanding down the cover 60,80,100,120,220,400

wolf550 · « **Reply #109 on:** May 12, 2023, 06:56:12 PM »

looks pretty good
I would probably go to 800 grit but not sure

wolf550 · « **Reply #110 on:** May 12, 2023, 06:57:37 PM »

it finally resembles the 550 cover

wolf550 · « **Reply #111 on:** May 12, 2023, 06:58:38 PM »

let me know what you think bert
I can put a stamp on it and send it over

bert96 · « **Reply #112 on:** May 12, 2023, 10:17:42 PM »

Wow!

Very very nice!

Bert

bert96 · « **Reply #113 on:** May 21, 2023, 06:02:22 PM »

Any update?

Bert

wolf550 · « **Reply #114 on:** June 07, 2023, 04:38:45 PM »

So back at it. I started work on another to see how it would turn out but I'm still getting that wobble.
After sanding grinding sanding again and again something had to be up.
I remade another sanding off gates and flat where no wiggle on cement floor where I do the sanding then some sanding inside the cover where it meets the bolt holes.
Coming along and get the wobble.
I took off the oil pressure cover and put back on. Still wobble.
Took cam chain spring piece off to get a better look to see where the wobble was coming from.
There is a bump near the jugs at front right corner.
Took a ruler to check all the other areas and they are all flat except this spot.
Before I go and sand this down is this supposed to be there?

newday777 · « **Reply #115 on:** June 07, 2023, 05:10:11 PM »

I'll have to look at it tomorrow.

bert96 · « **Reply #116 on:** June 18, 2023, 07:11:39 AM »

Here is the beautiful finned cover made by wolf550. I'm very happy to intall it on my 750.

Thanks Anthony

Bert

wolf550 · « **Reply #117 on:** June 18, 2023, 08:42:49 AM »

Man! that looks Great Bert! what paint is that with the texture on it? that looks very cool.

not sure how finny you want your bike to be but got a guy who asked if I could make him a piece for his chopper Im working on

bert96 · « **Reply #118 on:** June 18, 2023, 12:21:21 PM »

For the cover i've just used vht paint. But for the rest of the motor i've done it with powder coating.
For the vent cover,i have a low profile cover.

Bert

wolf550 · « **Reply #119 on:** July 12, 2023, 06:05:43 PM »

been awhile since the guy gave me to work on this breather cover project
it has been tough
im working on the front now to create the look of the front
it is a little bit at a time but so far so good

wolf550 · « **Reply #120 on:** July 12, 2023, 06:08:52 PM »

luckily I was able to cast a couple that I could work with except the front was not built up and had to dig into the front

wolf550 · « **Reply #121 on:** July 12, 2023, 06:12:52 PM »

the one on the left has thinner fins thanks to not having a smaller diameter bastard file to grind it
and the one on the right has thicker fins but dont have a bigger file to get rid of all the pitting between the fins

wolf550 · « **Reply #122 on:** July 12, 2023, 06:16:15 PM »

next up will be a test of the oem to see if will cast and not have to file any of the fins or faces to keep that sand cast look

wolf550 · « **Reply #123 on:** July 12, 2023, 06:20:05 PM »

Ill keep a few like that but I will have to fill in the sides to make it flat without the bottom lip
I thought I would just remove the lip but this leaves too much area on the top of the rocker cover

wolf550 · « **Reply #124 on:** July 12, 2023, 06:20:59 PM »

wouldnt let me post all pics on that last one

News:

Author Topic: CB750 finned starter cover (Read 5226 times)