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Bolt Size for forestay chainplate ?

Lukas Svrcek

New Member
This is what I ordered if anyone needs this info in future. I would recommend to get all the bolts about quarter inch bigger to make the job easier.
This is for 2 bolts on top and 4 in front.
This is from McMaster


LineProductOrderedShippedBalancePriceTotal
190585A692316 Stainless Steel Hex Drive Flat Head Screw, 1/2"-13 Thread Size, 2-1/4" Long, Packs of 14
Packs
403.70
Per Pack
14.80
292186A632Super-Corrosion-Resistant 316 Stainless Steel Hex Head Screw, 3/8"-16 Thread Size, 2" Long, Partially Threaded, Packs of 51
Pack
104.73
Per Pack
4.73
394819A049Super-Corrosion-Resistant 316 Stainless Steel Hex Nut, 3/8"-16 Thread Size, ASTM F594, Packs of 251
Pack
104.19
Per Pack
4.19
490107A127316 Stainless Steel Washer for 3/8" Screw Size, 0.406" ID, 0.75" OD, Packs of 251
Pack
108.80
Per Pack
8.80
594819A055Super-Corrosion-Resistant 316 Stainless Steel Hex Nut, 1/2"-13 Thread Size, ASTM F594, Packs of 51
Pack
102.49
Per Pack
2.49
690107A033316 Stainless Steel Washer for 1/2" Screw Size, 0.531" ID, 1.25" OD, Packs of 251
Pack
108.16
Per Pack
8.16
792147A033316 Stainless Steel Split Lock Washer for 1/2" Screw Size, 0.512" ID, 0.869" OD, Packs of 251
Pack
105.78
Per Pack
5.7
 

terry_thatcher

Terence Thatcher
I was going to replace mine and could not remove them. Impossiuble to move the slotted screw on the outside and couldn't get a wrench on the nut inside. How did you get them removed?
 

Lukas Svrcek

New Member
I was going to replace mine and could not remove them. Impossiuble to move the slotted screw on the outside and couldn't get a wrench on the nut inside. How did you get them removed?
I bought my Morgan with the chainplates off. But putting the nuts on from the inside required some tactical yoga positions. I didn't think I was going to be able to do it but many curse words later I got it done. My chain locker had quite of modifications so it might be different than yours.

Here is a pic before the chainplate went in.

IMG_20200913_120336.jpg
 

datswite

Ken Ferrari
Yeah, that is a tough job. Reaching those buggers is a mothe.... uh, you know what I mean. I bought a 24" ratchet wrench from Harbor Freight just to reach them. I got the nuts off, but extracting the bolts proved to be impossible. I think they were bedded with 5200 or something. They wouldn't turn, nor could I get swinging room to tap them out with a hammer. So... in they stayed. Luckily that chainplate is entirely external, so crevice corrosion is unlikely. And, it's unlikely that all of the bolts would fail at the same time.

Anyway, great job getting those things out!
 
It seems I may have to tackle this. While working on other things I reached up there to see if I could reach the bolts. My arms are long enough I easily reached them all, and they feel quite rusted. Ugg.
 
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