facebook1 youtube1 twitter1 instagram linkedin1 pinterest1

NOTICE:  If you are not a free registered member of the site, you will not see the photos in the forum, and you won't be able to access our premium member content. Please consider joining our community! REGISTER AND MAKE THIS BOX DISAPPEAR!

1974 DT100A Restoration

  • imagelessJAKE
  • imagelessJAKE's Avatar Topic Author
  • Offline
  • Site Supporter
  • Site Supporter
  • Posts: 78
  • Likes received: 46

Replied by imagelessJAKE on topic 1974 DT100A Restoration

also dumb question - I was considering buying a bearing set from all-balls for both the front and rear wheels as well (no reason why I just like to run a fresh set if im taking the wheels off)

and I saw they have a set of tapered roller bearings for the steering stem - which is weird because I recall these bikes having ball bearings fit into a race.

do those tapered bearings just rest on top of the race or do you need to take the race out to run them?
'68 Yamaha DT1 250
'73 Honda CB350
'74 Yamaha DT100
'86 Yamaha FJ1200
'89 Honda Hawk GT
'17 Yamaha FZ07
13 Dec 2021 13:10 #41

Please Log in or Create an account to join the conversation.

  • Posts: 11768
  • Likes received: 6969

Replied by MarkT on topic 1974 DT100A Restoration

You need to completely remove all 4 original races.  

Even then, often the new height is taller...  not much of an issue on some bikes, an issue on others.  
1963 YG1-T, 1965 MG1-T, Allstate 250, 1970 CT1b, 1971 R5, 1973 AT3MX, 1974 TS400L, 1975 RD350, 1976 DT175C, 1976 Husqvarna 250CR, 1981 DT175G, 1988 DT50, 1990 "Super" DT50, 1991 RT180, 2017 XT250
13 Dec 2021 15:23 #42

Please Log in or Create an account to join the conversation.

  • imagelessJAKE
  • imagelessJAKE's Avatar Topic Author
  • Offline
  • Site Supporter
  • Site Supporter
  • Posts: 78
  • Likes received: 46

Replied by imagelessJAKE on topic 1974 DT100A Restoration

Mark,

Many thanks for the heads up.

Didnt know if it would be an upgrade for the bike - since I plan on running this bike basically daily for a short commute to and from the bike shop I'd really like it to have some upgrades.

I think I'll just buy some new ball bearings of appropriate size with some fresh grease 

This image is hidden for guests.
Please log in or register to see it.

'68 Yamaha DT1 250
'73 Honda CB350
'74 Yamaha DT100
'86 Yamaha FJ1200
'89 Honda Hawk GT
'17 Yamaha FZ07
17 Dec 2021 06:56 #43

Please Log in or Create an account to join the conversation.

  • imagelessJAKE
  • imagelessJAKE's Avatar Topic Author
  • Offline
  • Site Supporter
  • Site Supporter
  • Posts: 78
  • Likes received: 46

Replied by imagelessJAKE on topic 1974 DT100A Restoration

Still waiting on paint and powdercoat

In the spirit of the holidays - I thought I would buy myself a gift:

A vape electronic ignition kit! I think while its costly its more then worth it to avoid messing with aftermarket coils/windings and points.


  

Putting fresh sprockets on the bike today - will post results.
'68 Yamaha DT1 250
'73 Honda CB350
'74 Yamaha DT100
'86 Yamaha FJ1200
'89 Honda Hawk GT
'17 Yamaha FZ07
Last edit: 17 Dec 2021 06:59 by imagelessJAKE.
17 Dec 2021 06:58 #44

This message has an attachment image.
Please log in or register to see it.

Please Log in or Create an account to join the conversation.

  • Posts: 11768
  • Likes received: 6969

Replied by MarkT on topic 1974 DT100A Restoration

You can buy quality ball bearings from bicycle shops...  1/4" lower and 3/16" upper. Look at parts list for quantity... should be 19 and 22 if I remember correctly.  Good hardware stores have them too.  Last time bike shop just gave them to me or you can buy small bags of good ball bearings cheap on Amazon or online stores..  nice to have extras.
1963 YG1-T, 1965 MG1-T, Allstate 250, 1970 CT1b, 1971 R5, 1973 AT3MX, 1974 TS400L, 1975 RD350, 1976 DT175C, 1976 Husqvarna 250CR, 1981 DT175G, 1988 DT50, 1990 "Super" DT50, 1991 RT180, 2017 XT250
The following user(s) Liked this Post: imagelessJAKE, Ht1kid
17 Dec 2021 07:10 #45

Please Log in or Create an account to join the conversation.

  • imagelessJAKE
  • imagelessJAKE's Avatar Topic Author
  • Offline
  • Site Supporter
  • Site Supporter
  • Posts: 78
  • Likes received: 46

Replied by imagelessJAKE on topic 1974 DT100A Restoration

Hey all - 

trying to upload some photos of the work done to the bike and the pictures are once again not uploading.

the site spits the following error despite being correct file size/type

Could Not Move File Into /Homepages/37/D93795775/Htdocs/Yamaha/Media/Kunena/Attachments/8297/1f6c7d9513901420257e7a20751cd6a4.

Thoughts?
'68 Yamaha DT1 250
'73 Honda CB350
'74 Yamaha DT100
'86 Yamaha FJ1200
'89 Honda Hawk GT
'17 Yamaha FZ07
Last edit: 01 Jan 2022 12:30 by imagelessJAKE.
01 Jan 2022 12:26 #46

Please Log in or Create an account to join the conversation.

  • Posts: 11768
  • Likes received: 6969

Replied by MarkT on topic 1974 DT100A Restoration

Probably same as before. Website temporarily out of space?
1963 YG1-T, 1965 MG1-T, Allstate 250, 1970 CT1b, 1971 R5, 1973 AT3MX, 1974 TS400L, 1975 RD350, 1976 DT175C, 1976 Husqvarna 250CR, 1981 DT175G, 1988 DT50, 1990 "Super" DT50, 1991 RT180, 2017 XT250
01 Jan 2022 20:19 #47

Please Log in or Create an account to join the conversation.

  • imagelessJAKE
  • imagelessJAKE's Avatar Topic Author
  • Offline
  • Site Supporter
  • Site Supporter
  • Posts: 78
  • Likes received: 46

Replied by imagelessJAKE on topic 1974 DT100A Restoration

Ahh! here we go!

So: went ahead with some more work while painting and powdercoating is going on

Fresh all ball bearings and seals front and rear

 

Fresh sprockets and chain front and rear

 

Gave the rims a light brushing with some cleaner and some steel wool and they cleaned up nice! 

 
 

waiting for one of the senior technicians here at the shop who has experience installing these electronic ignitions to help me out - seems like it would be something easy to get messed up if not done correctly. 

On the way: Some 320mm rear shocks with 12mm bushings - seems to be roughly accurate to what is on there currently - they are adjustable too so thats a plus.

   
'68 Yamaha DT1 250
'73 Honda CB350
'74 Yamaha DT100
'86 Yamaha FJ1200
'89 Honda Hawk GT
'17 Yamaha FZ07
The following user(s) Liked this Post: Sneezles61, Mike P
Last edit: 02 Jan 2022 14:44 by imagelessJAKE.
02 Jan 2022 14:35 #48

This message has attachments images.
Please log in or register to see it.

Please Log in or Create an account to join the conversation.

  • Posts: 1788
  • Likes received: 766

Replied by Scootern29 on topic 1974 DT100A Restoration

Aren't the bushings supposed to be 10mm? That's what I have in my notebook on shock bolt sizes.
Question authority, think for yourself!
The following user(s) Liked this Post: MarkT
02 Jan 2022 18:27 #49

Please Log in or Create an account to join the conversation.

  • imagelessJAKE
  • imagelessJAKE's Avatar Topic Author
  • Offline
  • Site Supporter
  • Site Supporter
  • Posts: 78
  • Likes received: 46

Replied by imagelessJAKE on topic 1974 DT100A Restoration

Hmm - I'm not sure - If I am being honest I saw a set of replicas - and they said 12mm bushings were the correct size (at least as far as I know)

I'll go to check out the bike when the shop opens on tuesday and see if they fit - otherwise I might see if I can get some correct size bushings made/ordered.
'68 Yamaha DT1 250
'73 Honda CB350
'74 Yamaha DT100
'86 Yamaha FJ1200
'89 Honda Hawk GT
'17 Yamaha FZ07
02 Jan 2022 20:08 #50

Please Log in or Create an account to join the conversation.

Moderators: yamadminEnduronutMakotosunDEETVinnieDevinJames Hart