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I've used HD wrinkle black. As stated, with most wrinkles, they wrinkle well when drying but are soft for some time. If the part is attached to the motor/primary/tranny, engine heat will be enough, just be gentle with it until you've had a few rides. Heat from the motor will cook it pretty well.
Looks to me like the directions say the inherent heat of the engine will work to cure it. It wrinkles fine at room temp. Running it will bake it to harden. You dont need to put it in the oven.
U could just use some matte black heat resistant paint from your local hardware store that u can gently brush on. Itll cover up and blend with the rest of the case. Doubt anyone will notice. $15 job for paint and a brush .
I think that I will go this route as I don't want to worry about over spray. The area is a crescent shape that is 1.5" long by 0.5" wide and on the underside. Tee derby will be powder coated. The rest of the primary is very dirty (and has the pink marks that HD put on it when they inspected it - hopefully those will come off easily) but not scratched up.
I would sand it to remove the texture and try reshape the big spot under the derby cover and repaint the whole thing. Thats some deep scratches... and I would just find a used cheap cover on eBay. Its no way it will look good after powder coat. Its all inexpensive, primary oil, primary gasket, used cover and why not 5 new bolts, wrinkle black. 50-80 bucks?
Last edited by Bob_fxdb; Mar 13, 2019 at 05:56 PM.
As per VHT's website: Curing Wrinkle Plus VHT Wrinkle Plus only attains its unique properties after correct curing.
Bake at 200°F (93°C) for 20 minutes.
The inherent heat of engine operation will also accomplish curing.
I use an old electric heater that has the tilt & temp cutout switch removed, when I do big parts with wrinkle I put them on an old grill rack get a roll of heavy aluminium foil and make a tent. Warm the part up till it's not quit hot to the touch , 2 coats of VHT wrinkle about 10 minutes apart then under the foil tent with the heater and let them cook for a while. Always comes out with a deep even finish, size of the wrinkle depends on how heavy the second coat goes on.Been doing it that way since the 70's, very durable too. Wrinkle painted a whole frame using VHT back when.
I would sand it to remove the texture and try reshape the big spot under the derby cover and repaint the whole thing. Thats some deep scratches... and I would just find a used cheap cover on eBay. Its no way it will look good after powder coat. Its all inexpensive, primary oil, primary gasket, used cover and why not 5 new bolts, wrinkle black. 50-80 bucks?
That would definitely yield a better result. I think sanding it down and brushing will be good enough for now. Next winter I plan on doing some engine work and also install a 30 tooth sprocket. That will require removal of both primaries. If I do not like how the brushed finish looks, then I can have the entire outer primary powder coated in wrinkle.
Why do you say that the derby will not look good after powder coat? I have not had this done before so I do not really know.
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