Author Topic: Honda CD175 + Aprilia RS125 - Yes I know they're not an air cooled Yamaha  (Read 5773 times)

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Offline Astute Greaser

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Re: Honda CD175 - Yes I know it's not an air cooled Yamaha
« Reply #150 on: February 14, 2021, 12:44:23 PM »

Anyone recommend some good drill bits for drilling the heads on the the Allen screws to tap in the extractor ? The screws are quite hard material even though the Allen heads have chewed up


If you can clamp the wheel down so it does not wander. Use an end mill in your bench drill. That will drill through your bolts like butter. Probably remove your broken extractors  ;) Do not use in hand drill, as end mills are not self centering.
-Mike

Offline Fredswat

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Re: Honda CD175 + Aprilia RS125 - Yes I know they're not an air cooled Yamaha
« Reply #151 on: February 14, 2021, 06:11:00 PM »
Another good suggestion Mike. I haven't actually broken any extractors off yet but It might happen.  I am still soaking the screws with penetrating oil .  Been doing it for four days now
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Offline kawazonkey

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Re: Honda CD175 + Aprilia RS125 - Yes I know they're not an air cooled Yamaha
« Reply #152 on: February 14, 2021, 09:48:19 PM »
If all else fails can you get someone to weld on some nuts to the bolts? Probably come out then with a breaker bar.

Offline Fredswat

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Re: Honda CD175 + Aprilia RS125 - Yes I know they're not an air cooled Yamaha
« Reply #153 on: February 15, 2021, 09:35:56 AM »
If all else fails can you get someone to weld on some nuts to the bolts? Probably come out then with a breaker bar.
Yes I tried welding a nut onto one of them but the heads are quite small . My welding skills aren't there yet either.  I think you need to hold the nut in place somehow around the outside of it and weld the inside to the top of the screw. 
74 RD200a
74 RD350A
77 RD400c
81 RD350LC
89 TDR 250
72 Kawasaki H1d
75 Kawasaki Z1b 
06 Kawasaki Z1000
71 Suzuki T500R
76 Suzuki Gt750
89 Suzuki RGV250 Vj21
75 Honda cd175 
85 Honda c90
03 Aprilia RS125 X2
48 Royal Enfield J2

Offline Astute Greaser

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Re: Honda CD175 + Aprilia RS125 - Yes I know they're not an air cooled Yamaha
« Reply #154 on: February 15, 2021, 11:37:33 AM »
Make up a tool to hold the nut in place made out of old copper pipe. The weld and splatter will not stick to this.
Tip - When Mig welding up holes in mudguards, a sheet of copper behind, makes this job a lot easier.
-Mike

Offline Fredswat

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Re: Honda CD175 + Aprilia RS125 - Yes I know they're not an air cooled Yamaha
« Reply #155 on: February 15, 2021, 01:10:05 PM »
Make up a tool to hold the nut in place made out of old copper pipe. The weld and splatter will not stick to this.
Tip - When Mig welding up holes in mudguards, a sheet of copper behind, makes this job a lot easier.
-Mike
Good Suggestion again Mike . However I have been persevering with the Penetrating oils and the extractor bits this morning and finally I have got the bolts out  :D. Not without 80% casualties though. Four out of the five bolts/screws heads sheared off.  Looks like someone had used red loctite on them.  Managed to drill out the remaining bits of screw on all of them by running progressively larger drills through the holes .  I will re-tap the holes once I have had the wheels powder coated.   Question is what colour? Anybody had any wheels done lately? What does it cost? Quite fancy Gold

74 RD200a
74 RD350A
77 RD400c
81 RD350LC
89 TDR 250
72 Kawasaki H1d
75 Kawasaki Z1b 
06 Kawasaki Z1000
71 Suzuki T500R
76 Suzuki Gt750
89 Suzuki RGV250 Vj21
75 Honda cd175 
85 Honda c90
03 Aprilia RS125 X2
48 Royal Enfield J2

Offline kawazonkey

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Re: Honda CD175 + Aprilia RS125 - Yes I know they're not an air cooled Yamaha
« Reply #156 on: February 15, 2021, 09:34:35 PM »
Gold would be my choice too! My local place charges £35 a wheel including shot blasting beforehand.

Offline Fredswat

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Re: Honda CD175 + Aprilia RS125 - Yes I know they're not an air cooled Yamaha
« Reply #157 on: February 16, 2021, 09:22:25 AM »
Gold would be my choice too! My local place charges £35 a wheel including shot blasting beforehand.
Whereabouts in the world are they that sounds a great price ?
74 RD200a
74 RD350A
77 RD400c
81 RD350LC
89 TDR 250
72 Kawasaki H1d
75 Kawasaki Z1b 
06 Kawasaki Z1000
71 Suzuki T500R
76 Suzuki Gt750
89 Suzuki RGV250 Vj21
75 Honda cd175 
85 Honda c90
03 Aprilia RS125 X2
48 Royal Enfield J2

Offline Fredswat

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Re: Honda CD175 + Aprilia RS125 - Yes I know they're not an air cooled Yamaha
« Reply #158 on: February 16, 2021, 05:15:47 PM »
Took the wheels to my local powder coating place today. £60 a wheel to finish blast them, powder coat and Lacquer.  Having them done in gold.  Lets wait and see how they look when they are ready . Should be in about a week.   :)
74 RD200a
74 RD350A
77 RD400c
81 RD350LC
89 TDR 250
72 Kawasaki H1d
75 Kawasaki Z1b 
06 Kawasaki Z1000
71 Suzuki T500R
76 Suzuki Gt750
89 Suzuki RGV250 Vj21
75 Honda cd175 
85 Honda c90
03 Aprilia RS125 X2
48 Royal Enfield J2

Offline kawazonkey

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Re: Honda CD175 + Aprilia RS125 - Yes I know they're not an air cooled Yamaha
« Reply #159 on: February 16, 2021, 09:32:56 PM »
My place is in Chertsey, Middx. A few miles from you! But glad you're getting them done. The Italian 125's look right with gold wheels.

Offline Fredswat

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Re: Honda CD175 + Aprilia RS125 - Yes I know they're not an air cooled Yamaha
« Reply #160 on: February 20, 2021, 09:40:36 PM »
I have been doing little bits on the Aprilia until I can get back onto the CD175.  I decided to open one of the boxes of stored RS125 parts and tidy them up ready for refitting whenever.  Spent ages masking and re-Painting the centre of the front disc after I blasted all the dirt off.  Quite pleased with the result. Should get the wheels back from powder coating on Tuesday.  I dismantled and blasted lots of footrest hanger parts.  I discovered that the LH footrest hanger/Gear lever mounting bracket is broken.  Anyone got any tips on aluminium welding ? I have an argon gas cylinder and aluminium wire for my mig welder but never tried it before.
« Last Edit: February 20, 2021, 09:42:17 PM by Fredswat »
74 RD200a
74 RD350A
77 RD400c
81 RD350LC
89 TDR 250
72 Kawasaki H1d
75 Kawasaki Z1b 
06 Kawasaki Z1000
71 Suzuki T500R
76 Suzuki Gt750
89 Suzuki RGV250 Vj21
75 Honda cd175 
85 Honda c90
03 Aprilia RS125 X2
48 Royal Enfield J2

Offline kawazonkey

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Re: Honda CD175 + Aprilia RS125 - Yes I know they're not an air cooled Yamaha
« Reply #161 on: February 21, 2021, 09:24:27 PM »
A tip on painting the centre part of the disc. Those big round rivets are the exact same size as a rattle can nozzle. I save old ones for just such a moment!

Offline Fredswat

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Re: Honda CD175 + Aprilia RS125 - Yes I know they're not an air cooled Yamaha
« Reply #162 on: February 22, 2021, 08:45:42 AM »
A tip on painting the centre part of the disc. Those big round rivets are the exact same size as a rattle can nozzle. I save old ones for just such a moment!

Cheers never thought of that .
Been painting some brackets.  I am trying to keep the costs down so I decided not to powder coat these bits. At the place I normally go to for Powder coating they charge relatively more for small batches so I will take a chance on the durability of "Hycote gloss black".  I was a big fan of PJ1 at one time but Hycote seems tougher 
 
74 RD200a
74 RD350A
77 RD400c
81 RD350LC
89 TDR 250
72 Kawasaki H1d
75 Kawasaki Z1b 
06 Kawasaki Z1000
71 Suzuki T500R
76 Suzuki Gt750
89 Suzuki RGV250 Vj21
75 Honda cd175 
85 Honda c90
03 Aprilia RS125 X2
48 Royal Enfield J2

Offline kawazonkey

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Re: Honda CD175 + Aprilia RS125 - Yes I know they're not an air cooled Yamaha
« Reply #163 on: February 22, 2021, 09:25:26 PM »
Hycote is the only paint I use. Tough stuff. Love your 'spray booth'  :D

Offline Fredswat

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Re: Honda CD175 + Aprilia RS125 - Yes I know they're not an air cooled Yamaha
« Reply #164 on: February 24, 2021, 04:27:54 PM »
Got the wheels back today for the Aprilia.  New bearings arrived as well so will be busy tomorrow sorting out bearings, cush drive, sprockets and discs. Also re tapping holes from stripped threads for rear disc
74 RD200a
74 RD350A
77 RD400c
81 RD350LC
89 TDR 250
72 Kawasaki H1d
75 Kawasaki Z1b 
06 Kawasaki Z1000
71 Suzuki T500R
76 Suzuki Gt750
89 Suzuki RGV250 Vj21
75 Honda cd175 
85 Honda c90
03 Aprilia RS125 X2
48 Royal Enfield J2